Construction of turbine and like rotors.



C. A. PARSONS, A. Q. CARNEGIE & S. S. COOK.

CONSTRUCTION OF TURBINE AND LIKE ROTORS. APPLICATION/FILED MAR. 20. 19m.

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Patented Jan. 2, 1917.

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CHARLES ALGERNON PARSONS AND ALFRED QUINTIN CARNEGIE, OF NEWCASTLE? UPON-TYNE, AND STANLEY SMITH COOK, OF WALLSEND, ENGLAND; SAID CAR- NEGIE AND SAID COOK ASSIGNORS TO SAID PARSONS.

CONSTRUCTION OF TURBINE AND LIKE ROTORS.

Specification of Letters Patent.

Patented Jan. 2, 1917.

Original application filed October 9, 1913, Serial No. 794,353. Divided and this application filed March 20, 1916. Serial No. 85,510.

To all whom it may concern Be it known that we, CHARLES ALGnRNoN PARsoNs, K. C. B., a subject of the King of Great Britain and Ireland, and residing at Heaton Works, N ewcastle-upon-Tyne, in the county of Northumberland, England, ALFRED QUINTIN CARNEGIE, a subject of the King of Great Britain and Ireland, and residing at Heaton Works, Newcastle-upon- Tyne, in the county of Northumberland, England, and STANLEY SMITH COOK, a subject of the King of Great Britain and Ireland, and residing at Turbinia Works, Wallsend-on-Tyne, in the county of Northumberland, England, have invented a certain new and useful Improved Construction of Turbine and Like Rotors, of which the following. is .a specification.

This invention relates to the construction of rotors for turbines and the like such as are described in application Serial No. 794,353, filed October 9th, 1913, of which this application is a division.

Referring to the accompanying drawings:Figure 1 shows a form of the present invention in which cup-like members,

spigoted together are employed to form a rotor suitable for a turbine. Fig. 2 shows an application of the present invention to a gear wheel rotor of the double helical type. Fig. 3 shows an alternative construction to Fig. 2. Fig. 4 illustrates alternative Fig. 5 shows a modified form of rotor similar to that shown in Fig. 2. Fig. 6 illustrates the application of the present invention to large gear wheel rotors.

In carrying the invention into effect according to one form, see Fig. 1, the mem bers a, which form part of the cylindrical surface, I), of the rotor are cup-shaped, and essentially short cylindrical drums having one end thereof open .and the other closed or partially closed by an inwardly projecting flange, c, which in some cases may extend to the shaft.

The flanges 0 are preferably of strength suflicient to support the entire circumferential portion of the drum independently of its circumferential strength so that, for example, in the case of a fault in the circumferential portion of any one cup the structure will still be strong enough to withstand all stresses to which it is subjected. The flanges may be reinforced at the center if desired. The members thus formed are attached to one another and to the shaft, the rims being spigoted into one another, as at d, or otherwise suitably connected, for example, by a short flange formed on the rim at the open end thereof.

Distance pieces, 6, forming hubs'of any suitable shape may be inserted between the flanges c resting upon the rotor shaft, f, and may be riveted or otherwise attached to the flanges against which they abut.

In the case of a stepped rotor the rim of one member is spigoted into or otherwise suitably attached to the closed end of the adjacent member. Usually such members are made by pressing rolled plates into the required shape.

The attachment of the drum to the rotor shaft for the pur ose of transmitting torque may be effecte by suitable means such as a key 1 at one or both ends of the drum or along the whole or a considerable part of its length.

In constructing a double helical gear wheel, for example, see Fig. 2, two members, a, of the cylindrical type above described with reference to Fig. 1, are threaded on a shaft, 7, with their closed ends, 0, back to back, connected by bolts, 72. and separated, if necessary, by suitable distance pieces y'. The members are preferably riveted or bolted to a suitable cast iron or cast steel hub, is, secured to the shaft, the helical teeth being cut on the periphery, b, of the disks either before or after assemblage, the teeth may be out upon a ring Z shrunk upon the outer periphery of a, a, see Fig. 3. If desired, the rims of such wheels may be stiffened by angles, m, attached near the open end of each member, or such ends may be closed by complete disks securely attached to the rim or to the shaft, or to both.

Alternative hub constructions are illus trated in Fig. 4. In all constructions of hub, serrations may be formed upon the portions 0, of the members, a, and upon the members forming the hub, and as shown in Fig. 1 these serrations may be held close together by means of nuts 77, screwed upon screwed portions of the hub 70, which pass through holes in the flanges c. It is convenient to mount the hubs, 7:, of the gear wheels upon v member. Right and left hand or single hand helical teeth may then be out upon the riphery, b, of the rotor.

In the case of large gear wheels, as shown in Fig. 6, two members of the cylindrical cup type are assembled on the shaft with their closed ends, 0, separated by a distance piece, 0, forming a hub, while the parts 'having the cylindrical surface, 6, are connected together or spi oted into one-another, as shown at d, and t e whole structure is held in position in any suitable manner, as

by a nutn, and a collar 0. As before, right or left hand helical teeth may then be formed 'on the rotor, and two such elements separated where necessary by a suitable distance piece may be combined to form a complete gear wheel.

Many further modifications, it will be seen, may be made in the manner of carrying the invention into eifect'without in any way departing from the spirit of the same.

Having now described our invention, what We, claim as new and desire to secure by Letters Patent is 1. A rotor comprising in combination a plurality of cupshaped elements,hub por tions between said elements, and means connecting said hub portions and said elements. 4

2'1 A rotor comprising a pair of cupshaped elements, hub portions between said elements, distance pieces between said elements, and means connecting said hubs and said elements and said distance pieces and said elements.

8. In a rotor comprising cup shaped elements and hub elements, means for connecting said cup shaped elements and said hub elements comprising screwed portions upon said-hubs-entering holes in said cup shaped elements, and nuts upon said screwed portions to cla'mp said cup shaped elements.

4. A rotor comprising a pair of cup shaped elements, hub portions between said elements, distance pieces between said elements, and means connecting said hubs and said elements and said distance pieces and said elements, and a toothed ring secured upon the outer peripheries of said elements.

In testimony whereof we have aflixed our signatures.

GHARLES'ALGERNON PARSONS. i ALFRED QIHNTIN CARNEGIE. STANLEY SMITH 000K. 

